Patents by Inventor Walter M. Zimberg

Walter M. Zimberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for removing phosphorus from industrial waste water
    Patent number: 4689154
    Abstract: An improved process is described for removing phosphorus from industrial waste water by contacting the waste water with ozone to convert reduced or organic phosphates into ortho-phosphates, and precipitating the soluble ortho-phosphates by treatment with lime. The precipitated material can be filtered, and the filtrate treated with activated carbon to produce an effluent stream having low levels of phosphorus.The process of this invention is particularly effective at low treatment temperatures, enabling efficient treatment of the waste water during periods of cold weather.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: August 25, 1987
    Assignee: Occidental Chemical Corporation
    Inventor: Walter M. Zimberg